using System;

internal class Program
{
static void Main(string[] args)
{
const string CommandExit = "Exit";
const string CommandAddDossier = "1";
const string CommandShowAllDossier = "2";
const string CommandRemoveDossier = "3";
const string CommandSearchByLastName = "4";

string[] employeeFullNames;
string[] employeePositions;
bool inProgram = true;

while (inProgram)
{
string userInput = Console.ReadLine();

switch (userInput)
{
case CommandAddDossier:
AddDossier();
break;
case CommandShowAllDossier:
ShowAllDossier();
break;
case CommandRemoveDossier:
RemoveDossier();
break;
case CommandSearchByLastName:
SearchByLastName();
break;
case CommandExit:
inProgram = false;
break;
default:
Console.WriteLine("Ошибка ввода.");
break;
}
}
}

static void AddDossier()
{

}

static void ShowAllDossier()
{

}

static void RemoveDossier()
{

}

static void SearchByLastName()
{

}

}